Seeking help regarding flameout issue of boiler burner
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We have a gas steam boiler here, and in the past couple of days the burner has kept shutting down. Strangely enough, there are no error lights on the burner unit, nor is it necessary to press the reset button on the burner unit for three seconds to reset it; it can be reset directly via the touch screen in the control cabinet. And it’s not a ignition issue; the flame goes out every time the pressure approaches the shutdown level. Even when I keep the flame at a low intensity manually, it still goes out, and there is no variation in the gas pressure. Could everyone please help diagnose what exactly is the problem?
Check whether the valves in the gas pipeline are closed due to a fault. If no cause can be identified, it is likely to be a problem with the PLC; please have the manufacturer handle it
It’s probably not a PLC issue; it doesn’t shut down every time it’s started.
It’s a minor issue – it’s better to communicate with the manufacturer rather than trying to figure it out on your own; at least that way you won’t have to worry about it. P
The manufacturer says it might be a false trigger caused by electromagnetic interference
Check the gas valve assembly; our unit had the same issue, and it was fixed after replacing the valve assembly. Blow out the filter screen. The ratio of wind to air.